JPS56138313A - Low-pass filter - Google Patents

Low-pass filter

Info

Publication number
JPS56138313A
JPS56138313A JP4162180A JP4162180A JPS56138313A JP S56138313 A JPS56138313 A JP S56138313A JP 4162180 A JP4162180 A JP 4162180A JP 4162180 A JP4162180 A JP 4162180A JP S56138313 A JPS56138313 A JP S56138313A
Authority
JP
Japan
Prior art keywords
inductance
series
capacitor
attenuation
arm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP4162180A
Other languages
Japanese (ja)
Other versions
JPS6049371B2 (en
Inventor
Hajime Okamura
Itsuko Okamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP4162180A priority Critical patent/JPS6049371B2/en
Publication of JPS56138313A publication Critical patent/JPS56138313A/en
Publication of JPS6049371B2 publication Critical patent/JPS6049371B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/03—Frequency selective two-port networks comprising means for compensation of loss
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/1758—Series LC in shunt or branch path
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/1766—Parallel LC in series path
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/17—Structural details of sub-circuits of frequency selective networks
    • H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
    • H03H7/1783—Combined LC in series path

Abstract

PURPOSE:To compensate the fallen-down of the extend of attenuation due to the leakage inductance, by connecting the coil in series with the capacitor of parallel arm, in LPF cascade-connected the parallel resonance circuit to the series arm through the use of the tap of coil. CONSTITUTION:As the series arm, the parallel resonance circuit is constituted with inductances L1''-L4'' and capacitors C1''-C4'', and the resonance circuits are in cascade connection through the use of tap by the inductance L2''. As the parallel arm, capacitors C5''-C9'' and C8'' in series connection of fine inductance L5 are connected. The extent of attenuation of the resonance circuit of the tapped inductance L2'' and capacitor C2'' is small and causes falling in frequency f0 by the series connection of the leakage inductance. Further, when the capacitor C8'' and the inductance L5 are selected as the resonance frequency f0, the extent of attenuation is increased in frequency f0. Thus, the falling of the attenuation due to the leakage inductance can be compensated.
JP4162180A 1980-03-31 1980-03-31 low pass filter Expired JPS6049371B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4162180A JPS6049371B2 (en) 1980-03-31 1980-03-31 low pass filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4162180A JPS6049371B2 (en) 1980-03-31 1980-03-31 low pass filter

Publications (2)

Publication Number Publication Date
JPS56138313A true JPS56138313A (en) 1981-10-28
JPS6049371B2 JPS6049371B2 (en) 1985-11-01

Family

ID=12613401

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4162180A Expired JPS6049371B2 (en) 1980-03-31 1980-03-31 low pass filter

Country Status (1)

Country Link
JP (1) JPS6049371B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0856136A (en) * 1995-08-21 1996-02-27 Hitachi Ltd Surface acoustic wave filter
JP2019161399A (en) * 2018-03-12 2019-09-19 三菱電機特機システム株式会社 Filter and electronic apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0356878U (en) * 1989-10-05 1991-05-31

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0856136A (en) * 1995-08-21 1996-02-27 Hitachi Ltd Surface acoustic wave filter
JP2019161399A (en) * 2018-03-12 2019-09-19 三菱電機特機システム株式会社 Filter and electronic apparatus

Also Published As

Publication number Publication date
JPS6049371B2 (en) 1985-11-01

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